I've been asked by a client to install drywall alongside his unfinished balcony and paint it all white. I've never done that kind of work so I asked a Home Depot employee and he recommended Ultralight Mold Resistant "green board". I was a bit skeptical because nowhere does it say "waterproof" on the label so I double checked if it could be used outdoors with possible direct water contact. He said yes. Now I'm reading that it's for indoor use only and that it's only meant for indirect water contact. I've already cut up the board to fit into my car and everything. Can I just use that and put like three coats of outdoor paint, or should I try to return it, but then what should I get instead? I know there are special boards like Fiberock Aqua Tough but they're meant as backing for tiles and not to be direclty exposed. What he wants is just white paint, is there any way I can achieve something like that using some specialized board? Another thing is that I got regular steel screws, but I'm reading that they can rust, so what should I be using to fasten the boards? Thanks.

Hi All, I'm not sure where the best place, or correct place is for this thread, so i'll try here first. The drywall tape in the ceiling of our garage has torn perfectly in the middle of quite a few of the joints. The joints have not really separated and It has been like this for years and never really gets any worse. The joints will however show very slight signs (64th of an inch or less) of separating during cold weather, but will go back together after warm weather returns. Is it safe to assume that this is just normal settling and nothing to worry about ? The rest of the house is solid with no signs of drywall separation anywhere. We will probably be selling our home soon and i'm trying to be ahead of the game as far as what any home inspector for a would be buyer would say about this issue. Thoughts and opinions would be appreciated.